Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
kylfa
←
Old Norse
kólfr
(mention)
→
Old High German
kolbo
(cognate)
→
Old Norse
kylfuhǫgg
(compound)